Merge tag 's390-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Remove restrictions on PAI NNPA and crypto counters, enabling
   concurrent per-task and system-wide sampling and counting events

 - Switch to GENERIC_CPU_DEVICES by setting up the CPU present mask in
   the architecture code and letting the generic code handle CPU
   bring-up

 - Add support for the diag204 busy indication facility to prevent
   undesirable blocking during hypervisor logical CPU utilization
   queries. Implement results caching

 - Improve the handling of Store Data SCLP events by suppressing
   unnecessary warning, preventing buffer release in I/O during
   failures, and adding timeout handling for Store Data requests to
   address potential firmware issues

 - Provide optimized __arch_hweight*() implementations

 - Remove the unnecessary CPU KOBJ_CHANGE uevents generated during
   topology updates, as they are unused and also not present on other
   architectures

 - Cleanup atomic_ops, optimize __atomic_set() for small values and
   __atomic_cmpxchg_bool() for compilers supporting flag output
   constraint

 - Couple of cleanups for KVM:
     - Move and improve KVM struct definitions for DAT tables from
       gaccess.c to a new header
     - Pass the asce as parameter to sie64a()

 - Make the crdte() and cspg() page table handling wrappers return a
   boolean to indicate success, like the other existing "compare and
   swap" wrappers

 - Add documentation for HWCAP flags

 - Switch to obtaining total RAM pages from memblock instead of
   totalram_pages() during mm init, to ensure correct calculation of
   zero page size, when defer_init is enabled

 - Refactor lowcore access and switch to using the get_lowcore()
   function instead of the S390_lowcore macro

 - Cleanups for PG_arch_1 and folio handling in UV and hugetlb code

 - Add missing MODULE_DESCRIPTION() macros

 - Fix VM_FAULT_HWPOISON handling in do_exception()

* tag 's390-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
  s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception()
  s390/kvm: Move bitfields for dat tables
  s390/entry: Pass the asce as parameter to sie64a()
  s390/sthyi: Use cached data when diag is busy
  s390/sthyi: Move diag operations
  s390/hypfs_diag: Diag204 busy loop
  s390/diag: Add busy-indication-facility requirements
  s390/diag: Diag204 add busy return errno
  s390/diag: Return errno's from diag204
  s390/sclp: Diag204 busy indication facility detection
  s390/atomic_ops: Make use of flag output constraint
  s390/atomic_ops: Improve __atomic_set() for small values
  s390/atomic_ops: Use symbolic names
  s390/smp: Switch to GENERIC_CPU_DEVICES
  s390/hwcaps: Add documentation for HWCAP flags
  s390/pgtable: Make crdte() and cspg() return a value
  s390/topology: Remove CPU KOBJ_CHANGE uevents
  s390/sclp: Add timeout to Store Data requests
  s390/sclp: Prevent release of buffer in I/O
  s390/sclp: Suppress unnecessary Store Data warning
  ...

27 files changed, 447 insertions, 107 deletions

diff --git a/arch/s390/include/asm/arch_hweight.h b/arch/s390/include/asm/arch_hweight.h
new file mode 100644
index 000000000000..50e23ce854e5
--- /dev/null
+++ b/arch/s390/include/asm/arch_hweight.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_S390_ARCH_HWEIGHT_H
+#define _ASM_S390_ARCH_HWEIGHT_H
+
+#include <linux/types.h>
+
+static __always_inline unsigned long popcnt_z196(unsigned long w)
+{
+	unsigned long cnt;
+
+	asm volatile(".insn	rrf,0xb9e10000,%[cnt],%[w],0,0"
+		     : [cnt] "=d" (cnt)
+		     : [w] "d" (w)
+		     : "cc");
+	return cnt;
+}
+
+static __always_inline unsigned long popcnt_z15(unsigned long w)
+{
+	unsigned long cnt;
+
+	asm volatile(".insn	rrf,0xb9e10000,%[cnt],%[w],8,0"
+		     : [cnt] "=d" (cnt)
+		     : [w] "d" (w)
+		     : "cc");
+	return cnt;
+}
+
+static __always_inline unsigned long __arch_hweight64(__u64 w)
+{
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z15_FEATURES))
+		return popcnt_z15(w);
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z196_FEATURES)) {
+		w = popcnt_z196(w);
+		w += w >> 32;
+		w += w >> 16;
+		w += w >> 8;
+		return w & 0xff;
+	}
+	return __sw_hweight64(w);
+}
+
+static __always_inline unsigned int __arch_hweight32(unsigned int w)
+{
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z15_FEATURES))
+		return popcnt_z15(w);
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z196_FEATURES)) {
+		w = popcnt_z196(w);
+		w += w >> 16;
+		w += w >> 8;
+		return w & 0xff;
+	}
+	return __sw_hweight32(w);
+}
+
+static __always_inline unsigned int __arch_hweight16(unsigned int w)
+{
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z15_FEATURES))
+		return popcnt_z15((unsigned short)w);
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z196_FEATURES)) {
+		w = popcnt_z196(w);
+		w += w >> 8;
+		return w & 0xff;
+	}
+	return __sw_hweight16(w);
+}
+
+static __always_inline unsigned int __arch_hweight8(unsigned int w)
+{
+	if (IS_ENABLED(CONFIG_HAVE_MARCH_Z196_FEATURES))
+		return popcnt_z196((unsigned char)w);
+	return __sw_hweight8(w);
+}
+
+#endif /* _ASM_S390_ARCH_HWEIGHT_H */
diff --git a/arch/s390/include/asm/atomic_ops.h b/arch/s390/include/asm/atomic_ops.h
index 7fa5f96a553a..2b379d1d9046 100644
--- a/arch/s390/include/asm/atomic_ops.h
+++ b/arch/s390/include/asm/atomic_ops.h
@@ -8,21 +8,29 @@
 #ifndef __ARCH_S390_ATOMIC_OPS__
 #define __ARCH_S390_ATOMIC_OPS__
 
+#include <linux/limits.h>
+
 static __always_inline int __atomic_read(const atomic_t *v)
 {
 	int c;
 
 	asm volatile(
-		"	l	%0,%1\n"
-		: "=d" (c) : "R" (v->counter));
+		"	l	%[c],%[counter]\n"
+		: [c] "=d" (c) : [counter] "R" (v->counter));
 	return c;
 }
 
 static __always_inline void __atomic_set(atomic_t *v, int i)
 {
-	asm volatile(
-		"	st	%1,%0\n"
-		: "=R" (v->counter) : "d" (i));
+	if (__builtin_constant_p(i) && i >= S16_MIN && i <= S16_MAX) {
+		asm volatile(
+			"	mvhi	%[counter], %[i]\n"
+			: [counter] "=Q" (v->counter) : [i] "K" (i));
+	} else {
+		asm volatile(
+			"	st	%[i],%[counter]\n"
+			: [counter] "=R" (v->counter) : [i] "d" (i));
+	}
 }
 
 static __always_inline s64 __atomic64_read(const atomic64_t *v)
@@ -30,16 +38,22 @@ static __always_inline s64 __atomic64_read(const atomic64_t *v)
 	s64 c;
 
 	asm volatile(
-		"	lg	%0,%1\n"
-		: "=d" (c) : "RT" (v->counter));
+		"	lg	%[c],%[counter]\n"
+		: [c] "=d" (c) : [counter] "RT" (v->counter));
 	return c;
 }
 
 static __always_inline void __atomic64_set(atomic64_t *v, s64 i)
 {
-	asm volatile(
-		"	stg	%1,%0\n"
-		: "=RT" (v->counter) : "d" (i));
+	if (__builtin_constant_p(i) && i >= S16_MIN && i <= S16_MAX) {
+		asm volatile(
+			"	mvghi	%[counter], %[i]\n"
+			: [counter] "=Q" (v->counter) : [i] "K" (i));
+	} else {
+		asm volatile(
+			"	stg	%[i],%[counter]\n"
+			: [counter] "=RT" (v->counter) : [i] "d" (i));
+	}
 }
 
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
@@ -164,26 +178,54 @@ static __always_inline int __atomic_cmpxchg(int *ptr, int old, int new)
 	return old;
 }
 
+static __always_inline long __atomic64_cmpxchg(long *ptr, long old, long new)
+{
+	asm volatile(
+		"	csg	%[old],%[new],%[ptr]"
+		: [old] "+d" (old), [ptr] "+QS" (*ptr)
+		: [new] "d" (new)
+		: "cc", "memory");
+	return old;
+}
+
+#ifdef __GCC_ASM_FLAG_OUTPUTS__
+
 static __always_inline bool __atomic_cmpxchg_bool(int *ptr, int old, int new)
 {
-	int old_expected = old;
+	int cc;
 
 	asm volatile(
 		"	cs	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+Q" (*ptr)
+		: [old] "+d" (old), [ptr] "+Q" (*ptr), "=@cc" (cc)
 		: [new] "d" (new)
-		: "cc", "memory");
-	return old == old_expected;
+		: "memory");
+	return cc == 0;
 }
 
-static __always_inline long __atomic64_cmpxchg(long *ptr, long old, long new)
+static __always_inline bool __atomic64_cmpxchg_bool(long *ptr, long old, long new)
 {
+	int cc;
+
 	asm volatile(
 		"	csg	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+QS" (*ptr)
+		: [old] "+d" (old), [ptr] "+QS" (*ptr), "=@cc" (cc)
+		: [new] "d" (new)
+		: "memory");
+	return cc == 0;
+}
+
+#else /* __GCC_ASM_FLAG_OUTPUTS__ */
+
+static __always_inline bool __atomic_cmpxchg_bool(int *ptr, int old, int new)
+{
+	int old_expected = old;
+
+	asm volatile(
+		"	cs	%[old],%[new],%[ptr]"
+		: [old] "+d" (old), [ptr] "+Q" (*ptr)
 		: [new] "d" (new)
 		: "cc", "memory");
-	return old;
+	return old == old_expected;
 }
 
 static __always_inline bool __atomic64_cmpxchg_bool(long *ptr, long old, long new)
@@ -198,4 +240,6 @@ static __always_inline bool __atomic64_cmpxchg_bool(long *ptr, long old, long ne
 	return old == old_expected;
 }
 
+#endif /* __GCC_ASM_FLAG_OUTPUTS__ */
+
 #endif /* __ARCH_S390_ATOMIC_OPS__  */
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index c467dffa8c12..54a079cd39ed 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -379,8 +379,9 @@ static inline int fls(unsigned int word)
 	return fls64(word);
 }
 
+#include <asm/arch_hweight.h>
+#include <asm-generic/bitops/const_hweight.h>
 #include <asm-generic/bitops/ffz.h>
-#include <asm-generic/bitops/hweight.h>
 #include <asm-generic/bitops/sched.h>
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic-setbit.h>
diff --git a/arch/s390/include/asm/current.h b/arch/s390/include/asm/current.h
index 68f84315277c..d03a922c641e 100644
--- a/arch/s390/include/asm/current.h
+++ b/arch/s390/include/asm/current.h
@@ -14,6 +14,6 @@
 
 struct task_struct;
 
-#define current ((struct task_struct *const)S390_lowcore.current_task)
+#define current ((struct task_struct *const)get_lowcore()->current_task)
 
 #endif /* !(_S390_CURRENT_H) */
diff --git a/arch/s390/include/asm/dat-bits.h b/arch/s390/include/asm/dat-bits.h
new file mode 100644
index 000000000000..8d65eec2f124
--- /dev/null
+++ b/arch/s390/include/asm/dat-bits.h
@@ -0,0 +1,170 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * DAT table and related structures
+ *
+ * Copyright IBM Corp. 2024
+ *
+ */
+
+#ifndef _S390_DAT_BITS_H
+#define _S390_DAT_BITS_H
+
+union asce {
+	unsigned long val;
+	struct {
+		unsigned long rsto: 52;/* Region- or Segment-Table Origin */
+		unsigned long	  : 2;
+		unsigned long g   : 1; /* Subspace Group control */
+		unsigned long p   : 1; /* Private Space control */
+		unsigned long s   : 1; /* Storage-Alteration-Event control */
+		unsigned long x   : 1; /* Space-Switch-Event control */
+		unsigned long r   : 1; /* Real-Space control */
+		unsigned long	  : 1;
+		unsigned long dt  : 2; /* Designation-Type control */
+		unsigned long tl  : 2; /* Region- or Segment-Table Length */
+	};
+};
+
+enum {
+	ASCE_TYPE_SEGMENT = 0,
+	ASCE_TYPE_REGION3 = 1,
+	ASCE_TYPE_REGION2 = 2,
+	ASCE_TYPE_REGION1 = 3
+};
+
+union region1_table_entry {
+	unsigned long val;
+	struct {
+		unsigned long rto: 52;/* Region-Table Origin */
+		unsigned long	 : 2;
+		unsigned long p  : 1; /* DAT-Protection Bit */
+		unsigned long	 : 1;
+		unsigned long tf : 2; /* Region-Second-Table Offset */
+		unsigned long i  : 1; /* Region-Invalid Bit */
+		unsigned long	 : 1;
+		unsigned long tt : 2; /* Table-Type Bits */
+		unsigned long tl : 2; /* Region-Second-Table Length */
+	};
+};
+
+union region2_table_entry {
+	unsigned long val;
+	struct {
+		unsigned long rto: 52;/* Region-Table Origin */
+		unsigned long	 : 2;
+		unsigned long p  : 1; /* DAT-Protection Bit */
+		unsigned long	 : 1;
+		unsigned long tf : 2; /* Region-Third-Table Offset */
+		unsigned long i  : 1; /* Region-Invalid Bit */
+		unsigned long	 : 1;
+		unsigned long tt : 2; /* Table-Type Bits */
+		unsigned long tl : 2; /* Region-Third-Table Length */
+	};
+};
+
+struct region3_table_entry_fc0 {
+	unsigned long sto: 52;/* Segment-Table Origin */
+	unsigned long	 : 1;
+	unsigned long fc : 1; /* Format-Control */
+	unsigned long p  : 1; /* DAT-Protection Bit */
+	unsigned long	 : 1;
+	unsigned long tf : 2; /* Segment-Table Offset */
+	unsigned long i  : 1; /* Region-Invalid Bit */
+	unsigned long cr : 1; /* Common-Region Bit */
+	unsigned long tt : 2; /* Table-Type Bits */
+	unsigned long tl : 2; /* Segment-Table Length */
+};
+
+struct region3_table_entry_fc1 {
+	unsigned long rfaa: 33;/* Region-Frame Absolute Address */
+	unsigned long	  : 14;
+	unsigned long av  : 1; /* ACCF-Validity Control */
+	unsigned long acc : 4; /* Access-Control Bits */
+	unsigned long f   : 1; /* Fetch-Protection Bit */
+	unsigned long fc  : 1; /* Format-Control */
+	unsigned long p   : 1; /* DAT-Protection Bit */
+	unsigned long iep : 1; /* Instruction-Execution-Protection */
+	unsigned long	  : 2;
+	unsigned long i   : 1; /* Region-Invalid Bit */
+	unsigned long cr  : 1; /* Common-Region Bit */
+	unsigned long tt  : 2; /* Table-Type Bits */
+	unsigned long	  : 2;
+};
+
+union region3_table_entry {
+	unsigned long val;
+	struct region3_table_entry_fc0 fc0;
+	struct region3_table_entry_fc1 fc1;
+	struct {
+		unsigned long	: 53;
+		unsigned long fc: 1; /* Format-Control */
+		unsigned long	: 4;
+		unsigned long i : 1; /* Region-Invalid Bit */
+		unsigned long cr: 1; /* Common-Region Bit */
+		unsigned long tt: 2; /* Table-Type Bits */
+		unsigned long	: 2;
+	};
+};
+
+struct segment_table_entry_fc0 {
+	unsigned long pto: 53;/* Page-Table Origin */
+	unsigned long fc : 1; /* Format-Control */
+	unsigned long p  : 1; /* DAT-Protection Bit */
+	unsigned long	 : 3;
+	unsigned long i  : 1; /* Segment-Invalid Bit */
+	unsigned long cs : 1; /* Common-Segment Bit */
+	unsigned long tt : 2; /* Table-Type Bits */
+	unsigned long	 : 2;
+};
+
+struct segment_table_entry_fc1 {
+	unsigned long sfaa: 44;/* Segment-Frame Absolute Address */
+	unsigned long	  : 3;
+	unsigned long av  : 1; /* ACCF-Validity Control */
+	unsigned long acc : 4; /* Access-Control Bits */
+	unsigned long f   : 1; /* Fetch-Protection Bit */
+	unsigned long fc  : 1; /* Format-Control */
+	unsigned long p   : 1; /* DAT-Protection Bit */
+	unsigned long iep : 1; /* Instruction-Execution-Protection */
+	unsigned long	  : 2;
+	unsigned long i   : 1; /* Segment-Invalid Bit */
+	unsigned long cs  : 1; /* Common-Segment Bit */
+	unsigned long tt  : 2; /* Table-Type Bits */
+	unsigned long	  : 2;
+};
+
+union segment_table_entry {
+	unsigned long val;
+	struct segment_table_entry_fc0 fc0;
+	struct segment_table_entry_fc1 fc1;
+	struct {
+		unsigned long	: 53;
+		unsigned long fc: 1; /* Format-Control */
+		unsigned long	: 4;
+		unsigned long i : 1; /* Segment-Invalid Bit */
+		unsigned long cs: 1; /* Common-Segment Bit */
+		unsigned long tt: 2; /* Table-Type Bits */
+		unsigned long	: 2;
+	};
+};
+
+union page_table_entry {
+	unsigned long val;
+	struct {
+		unsigned long pfra: 52;/* Page-Frame Real Address */
+		unsigned long z   : 1; /* Zero Bit */
+		unsigned long i   : 1; /* Page-Invalid Bit */
+		unsigned long p   : 1; /* DAT-Protection Bit */
+		unsigned long iep : 1; /* Instruction-Execution-Protection */
+		unsigned long	  : 8;
+	};
+};
+
+enum {
+	TABLE_TYPE_SEGMENT = 0,
+	TABLE_TYPE_REGION3 = 1,
+	TABLE_TYPE_REGION2 = 2,
+	TABLE_TYPE_REGION1 = 3
+};
+
+#endif /* _S390_DAT_BITS_H */
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h
index 20b94220113b..c0d43512f4fc 100644
--- a/arch/s390/include/asm/diag.h
+++ b/arch/s390/include/asm/diag.h
@@ -12,6 +12,7 @@
 #include <linux/if_ether.h>
 #include <linux/percpu.h>
 #include <asm/asm-extable.h>
+#include <asm/sclp.h>
 #include <asm/cio.h>
 
 enum diag_stat_enum {
@@ -117,6 +118,8 @@ enum diag204_sc {
 };
 
 #define DIAG204_SUBCODE_MASK 0xffff
+#define DIAG204_BIF_BIT 0x80000000
+#define DIAG204_BUSY_WAIT (HZ / 10)
 
 /* The two available diag 204 data formats */
 enum diag204_format {
@@ -326,6 +329,11 @@ union diag318_info {
 	};
 };
 
+static inline bool diag204_has_bif(void)
+{
+	return sclp.has_diag204_bif;
+}
+
 int diag204(unsigned long subcode, unsigned long size, void *addr);
 int diag224(void *ptr);
 int diag26c(void *req, void *resp, enum diag26c_sc subcode);
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 70a30ae258b7..8f2c23cc52b6 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -91,6 +91,14 @@
 /* Keep this the last entry.  */
 #define R_390_NUM	61
 
+/*
+ * HWCAP flags - for AT_HWCAP
+ *
+ * Bits 32-63 are reserved for use by libc.
+ * Bit 31 is reserved and will be used by libc to determine if a second
+ * argument is passed to IFUNC resolvers. This will be implemented when
+ * there is a need for AT_HWCAP2.
+ */
 enum {
 	HWCAP_NR_ESAN3		= 0,
 	HWCAP_NR_ZARCH		= 1,
diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h
index 796007125dff..d46cc725f024 100644
--- a/arch/s390/include/asm/facility.h
+++ b/arch/s390/include/asm/facility.h
@@ -92,8 +92,8 @@ static inline void __stfle(u64 *stfle_fac_list, int size)
 
 	asm volatile(
 		"	stfl	0(0)\n"
-		: "=m" (S390_lowcore.stfl_fac_list));
-	stfl_fac_list = S390_lowcore.stfl_fac_list;
+		: "=m" (get_lowcore()->stfl_fac_list));
+	stfl_fac_list = get_lowcore()->stfl_fac_list;
 	memcpy(stfle_fac_list, &stfl_fac_list, 4);
 	nr = 4; /* bytes stored by stfl */
 	if (stfl_fac_list & 0x01000000) {
diff --git a/arch/s390/include/asm/hardirq.h b/arch/s390/include/asm/hardirq.h
index 58668ffb5488..a5b45388c91f 100644
--- a/arch/s390/include/asm/hardirq.h
+++ b/arch/s390/include/asm/hardirq.h
@@ -13,9 +13,9 @@
 
 #include <asm/lowcore.h>
 
-#define local_softirq_pending() (S390_lowcore.softirq_pending)
-#define set_softirq_pending(x) (S390_lowcore.softirq_pending = (x))
-#define or_softirq_pending(x)  (S390_lowcore.softirq_pending |= (x))
+#define local_softirq_pending() (get_lowcore()->softirq_pending)
+#define set_softirq_pending(x) (get_lowcore()->softirq_pending = (x))
+#define or_softirq_pending(x)  (get_lowcore()->softirq_pending |= (x))
 
 #define __ARCH_IRQ_STAT
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 9281063636a7..a0479c4892f8 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -1030,11 +1030,12 @@ void kvm_arch_crypto_clear_masks(struct kvm *kvm);
 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
 			       unsigned long *aqm, unsigned long *adm);
 
-int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa);
+int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa,
+	     unsigned long gasce);
 
-static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa)
+static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce)
 {
-	return __sie64a(virt_to_phys(sie_block), sie_block, rsa);
+	return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce);
 }
 
 extern char sie_exit;
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 8c5f16857539..c724e71e1785 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -213,7 +213,10 @@ struct lowcore {
 	__u8	pad_0x1900[0x2000-0x1900];	/* 0x1900 */
 } __packed __aligned(8192);
 
-#define S390_lowcore (*((struct lowcore *) 0))
+static __always_inline struct lowcore *get_lowcore(void)
+{
+	return NULL;
+}
 
 extern struct lowcore *lowcore_ptr[];
 
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index a7789a9f6218..d56eb0a1f37b 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -76,9 +76,9 @@ static inline void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *
 	int cpu = smp_processor_id();
 
 	if (next == &init_mm)
-		S390_lowcore.user_asce = s390_invalid_asce;
+		get_lowcore()->user_asce = s390_invalid_asce;
 	else
-		S390_lowcore.user_asce.val = next->context.asce;
+		get_lowcore()->user_asce.val = next->context.asce;
 	cpumask_set_cpu(cpu, &next->context.cpu_attach_mask);
 	/* Clear previous user-ASCE from CR7 */
 	local_ctl_load(7, &s390_invalid_asce);
@@ -111,7 +111,7 @@ static inline void finish_arch_post_lock_switch(void)
 		__tlb_flush_mm_lazy(mm);
 		preempt_enable();
 	}
-	local_ctl_load(7, &S390_lowcore.user_asce);
+	local_ctl_load(7, &get_lowcore()->user_asce);
 }
 
 #define activate_mm activate_mm
@@ -120,7 +120,7 @@ static inline void activate_mm(struct mm_struct *prev,
 {
 	switch_mm(prev, next, current);
 	cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
-	local_ctl_load(7, &S390_lowcore.user_asce);
+	local_ctl_load(7, &get_lowcore()->user_asce);
 }
 
 #include <asm-generic/mmu_context.h>
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 224ff9d433ea..5ec41ec3d761 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -162,6 +162,7 @@ static inline int page_reset_referenced(unsigned long addr)
 #define _PAGE_ACC_BITS		0xf0	/* HW access control bits	*/
 
 struct page;
+struct folio;
 void arch_free_page(struct page *page, int order);
 void arch_alloc_page(struct page *page, int order);
 
@@ -174,6 +175,8 @@ static inline int devmem_is_allowed(unsigned long pfn)
 #define HAVE_ARCH_ALLOC_PAGE
 
 #if IS_ENABLED(CONFIG_PGSTE)
+int arch_make_folio_accessible(struct folio *folio);
+#define HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE
 int arch_make_page_accessible(struct page *page);
 #define HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
 #endif
@@ -247,7 +250,9 @@ static inline unsigned long __phys_addr(unsigned long x, bool is_31bit)
 #define pfn_to_phys(pfn)	((pfn) << PAGE_SHIFT)
 
 #define phys_to_page(phys)	pfn_to_page(phys_to_pfn(phys))
+#define phys_to_folio(phys)	page_folio(phys_to_page(phys))
 #define page_to_phys(page)	pfn_to_phys(page_to_pfn(page))
+#define folio_to_phys(page)	pfn_to_phys(folio_pfn(folio))
 
 static inline void *pfn_to_virt(unsigned long pfn)
 {
diff --git a/arch/s390/include/asm/pai.h b/arch/s390/include/asm/pai.h
index 3f609565734b..25f2077ba3c9 100644
--- a/arch/s390/include/asm/pai.h
+++ b/arch/s390/include/asm/pai.h
@@ -55,11 +55,11 @@ static __always_inline void pai_kernel_enter(struct pt_regs *regs)
 		return;
 	if (!static_branch_unlikely(&pai_key))
 		return;
-	if (!S390_lowcore.ccd)
+	if (!get_lowcore()->ccd)
 		return;
 	if (!user_mode(regs))
 		return;
-	WRITE_ONCE(S390_lowcore.ccd, S390_lowcore.ccd | PAI_CRYPTO_KERNEL_OFFSET);
+	WRITE_ONCE(get_lowcore()->ccd, get_lowcore()->ccd | PAI_CRYPTO_KERNEL_OFFSET);
 }
 
 static __always_inline void pai_kernel_exit(struct pt_regs *regs)
@@ -68,18 +68,15 @@ static __always_inline void pai_kernel_exit(struct pt_regs *regs)
 		return;
 	if (!static_branch_unlikely(&pai_key))
 		return;
-	if (!S390_lowcore.ccd)
+	if (!get_lowcore()->ccd)
 		return;
 	if (!user_mode(regs))
 		return;
-	WRITE_ONCE(S390_lowcore.ccd, S390_lowcore.ccd & ~PAI_CRYPTO_KERNEL_OFFSET);
+	WRITE_ONCE(get_lowcore()->ccd, get_lowcore()->ccd & ~PAI_CRYPTO_KERNEL_OFFSET);
 }
 
-enum paievt_mode {
-	PAI_MODE_NONE,
-	PAI_MODE_SAMPLING,
-	PAI_MODE_COUNTING,
-};
-
 #define PAI_SAVE_AREA(x)	((x)->hw.event_base)
+#define PAI_CPU_MASK(x)		((x)->hw.addr_filters)
+#define PAI_SWLIST(x)		(&(x)->hw.tp_list)
+
 #endif
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h
index 264095dd84bc..89a28740b6ab 100644
--- a/arch/s390/include/asm/percpu.h
+++ b/arch/s390/include/asm/percpu.h
@@ -9,7 +9,7 @@
  * s390 uses its own implementation for per cpu data, the offset of
  * the cpu local data area is cached in the cpu's lowcore memory.
  */
-#define __my_cpu_offset S390_lowcore.percpu_offset
+#define __my_cpu_offset get_lowcore()->percpu_offset
 
 /*
  * For 64 bit module code, the module may be more than 4G above the
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 70b6ee557eb2..b5632dbe5438 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -609,7 +609,15 @@ static inline void csp(unsigned int *ptr, unsigned int old, unsigned int new)
 		: "cc");
 }
 
-static inline void cspg(unsigned long *ptr, unsigned long old, unsigned long new)
+/**
+ * cspg() - Compare and Swap and Purge (CSPG)
+ * @ptr: Pointer to the value to be exchanged
+ * @old: The expected old value
+ * @new: The new value
+ *
+ * Return: True if compare and swap was successful, otherwise false.
+ */
+static inline bool cspg(unsigned long *ptr, unsigned long old, unsigned long new)
 {
 	union register_pair r1 = { .even = old, .odd = new, };
 	unsigned long address = (unsigned long)ptr | 1;
@@ -619,6 +627,7 @@ static inline void cspg(unsigned long *ptr, unsigned long old, unsigned long new
 		: [r1] "+&d" (r1.pair), "+m" (*ptr)
 		: [address] "d" (address)
 		: "cc");
+	return old == r1.even;
 }
 
 #define CRDTE_DTT_PAGE		0x00UL
@@ -627,7 +636,18 @@ static inline void cspg(unsigned long *ptr, unsigned long old, unsigned long new
 #define CRDTE_DTT_REGION2	0x18UL
 #define CRDTE_DTT_REGION1	0x1cUL
 
-static inline void crdte(unsigned long old, unsigned long new,
+/**
+ * crdte() - Compare and Replace DAT Table Entry
+ * @old:     The expected old value
+ * @new:     The new value
+ * @table:   Pointer to the value to be exchanged
+ * @dtt:     Table type of the table to be exchanged
+ * @address: The address mapped by the entry to be replaced
+ * @asce:    The ASCE of this entry
+ *
+ * Return: True if compare and replace was successful, otherwise false.
+ */
+static inline bool crdte(unsigned long old, unsigned long new,
 			 unsigned long *table, unsigned long dtt,
 			 unsigned long address, unsigned long asce)
 {
@@ -638,6 +658,7 @@ static inline void crdte(unsigned long old, unsigned long new,
 		     : [r1] "+&d" (r1.pair)
 		     : [r2] "d" (r2.pair), [asce] "a" (asce)
 		     : "memory", "cc");
+	return old == r1.even;
 }
 
 /*
@@ -1167,7 +1188,7 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
 	res = ptep_xchg_lazy(mm, addr, ptep, __pte(_PAGE_INVALID));
 	/* At this point the reference through the mapping is still present */
 	if (mm_is_protected(mm) && pte_present(res))
-		uv_convert_owned_from_secure(pte_val(res) & PAGE_MASK);
+		uv_convert_from_secure_pte(res);
 	return res;
 }
 
@@ -1185,7 +1206,7 @@ static inline pte_t ptep_clear_flush(struct vm_area_struct *vma,
 	res = ptep_xchg_direct(vma->vm_mm, addr, ptep, __pte(_PAGE_INVALID));
 	/* At this point the reference through the mapping is still present */
 	if (mm_is_protected(vma->vm_mm) && pte_present(res))
-		uv_convert_owned_from_secure(pte_val(res) & PAGE_MASK);
+		uv_convert_from_secure_pte(res);
 	return res;
 }
 
@@ -1217,14 +1238,14 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm,
 	 * The notifier should have destroyed all protected vCPUs at this
 	 * point, so the destroy should be successful.
 	 */
-	if (full && !uv_destroy_owned_page(pte_val(res) & PAGE_MASK))
+	if (full && !uv_destroy_pte(res))
 		return res;
 	/*
 	 * If something went wrong and the page could not be destroyed, or
 	 * if this is not a mm teardown, the slower export is used as
 	 * fallback instead.
 	 */
-	uv_convert_owned_from_secure(pte_val(res) & PAGE_MASK);
+	uv_convert_from_secure_pte(res);
 	return res;
 }
 
diff --git a/arch/s390/include/asm/preempt.h b/arch/s390/include/asm/preempt.h
index 0e3da500e98c..3ae5f31c665d 100644
--- a/arch/s390/include/asm/preempt.h
+++ b/arch/s390/include/asm/preempt.h
@@ -14,7 +14,7 @@
 
 static __always_inline int preempt_count(void)
 {
-	return READ_ONCE(S390_lowcore.preempt_count) & ~PREEMPT_NEED_RESCHED;
+	return READ_ONCE(get_lowcore()->preempt_count) & ~PREEMPT_NEED_RESCHED;
 }
 
 static __always_inline void preempt_count_set(int pc)
@@ -22,26 +22,26 @@ static __always_inline void preempt_count_set(int pc)
 	int old, new;
 
 	do {
-		old = READ_ONCE(S390_lowcore.preempt_count);
+		old = READ_ONCE(get_lowcore()->preempt_count);
 		new = (old & PREEMPT_NEED_RESCHED) |
 			(pc & ~PREEMPT_NEED_RESCHED);
-	} while (__atomic_cmpxchg(&S390_lowcore.preempt_count,
+	} while (__atomic_cmpxchg(&get_lowcore()->preempt_count,
 				  old, new) != old);
 }
 
 static __always_inline void set_preempt_need_resched(void)
 {
-	__atomic_and(~PREEMPT_NEED_RESCHED, &S390_lowcore.preempt_count);
+	__atomic_and(~PREEMPT_NEED_RESCHED, &get_lowcore()->preempt_count);
 }
 
 static __always_inline void clear_preempt_need_resched(void)
 {
-	__atomic_or(PREEMPT_NEED_RESCHED, &S390_lowcore.preempt_count);
+	__atomic_or(PREEMPT_NEED_RESCHED, &get_lowcore()->preempt_count);
 }
 
 static __always_inline bool test_preempt_need_resched(void)
 {
-	return !(READ_ONCE(S390_lowcore.preempt_count) & PREEMPT_NEED_RESCHED);
+	return !(READ_ONCE(get_lowcore()->preempt_count) & PREEMPT_NEED_RESCHED);
 }
 
 static __always_inline void __preempt_count_add(int val)
@@ -52,11 +52,11 @@ static __always_inline void __preempt_count_add(int val)
 	 */
 	if (!IS_ENABLED(CONFIG_PROFILE_ALL_BRANCHES)) {
 		if (__builtin_constant_p(val) && (val >= -128) && (val <= 127)) {
-			__atomic_add_const(val, &S390_lowcore.preempt_count);
+			__atomic_add_const(val, &get_lowcore()->preempt_count);
 			return;
 		}
 	}
-	__atomic_add(val, &S390_lowcore.preempt_count);
+	__atomic_add(val, &get_lowcore()->preempt_count);
 }
 
 static __always_inline void __preempt_count_sub(int val)
@@ -66,12 +66,12 @@ static __always_inline void __preempt_count_sub(int val)
 
 static __always_inline bool __preempt_count_dec_and_test(void)
 {
-	return __atomic_add(-1, &S390_lowcore.preempt_count) == 1;
+	return __atomic_add(-1, &get_lowcore()->preempt_count) == 1;
 }
 
 static __always_inline bool should_resched(int preempt_offset)
 {
-	return unlikely(READ_ONCE(S390_lowcore.preempt_count) ==
+	return unlikely(READ_ONCE(get_lowcore()->preempt_count) ==
 			preempt_offset);
 }
 
@@ -81,12 +81,12 @@ static __always_inline bool should_resched(int preempt_offset)
 
 static __always_inline int preempt_count(void)
 {
-	return READ_ONCE(S390_lowcore.preempt_count);
+	return READ_ONCE(get_lowcore()->preempt_count);
 }
 
 static __always_inline void preempt_count_set(int pc)
 {
-	S390_lowcore.preempt_count = pc;
+	get_lowcore()->preempt_count = pc;
 }
 
 static __always_inline void set_preempt_need_resched(void)
@@ -104,17 +104,17 @@ static __always_inline bool test_preempt_need_resched(void)
 
 static __always_inline void __preempt_count_add(int val)
 {
-	S390_lowcore.preempt_count += val;
+	get_lowcore()->preempt_count += val;
 }
 
 static __always_inline void __preempt_count_sub(int val)
 {
-	S390_lowcore.preempt_count -= val;
+	get_lowcore()->preempt_count -= val;
 }
 
 static __always_inline bool __preempt_count_dec_and_test(void)
 {
-	return !--S390_lowcore.preempt_count && tif_need_resched();
+	return !--get_lowcore()->preempt_count && tif_need_resched();
 }
 
 static __always_inline bool should_resched(int preempt_offset)
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 07ad5a1df878..c87cf2b8e81a 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -46,17 +46,17 @@ typedef long (*sys_call_ptr_t)(struct pt_regs *regs);
 
 static __always_inline void set_cpu_flag(int flag)
 {
-	S390_lowcore.cpu_flags |= (1UL << flag);
+	get_lowcore()->cpu_flags |= (1UL << flag);
 }
 
 static __always_inline void clear_cpu_flag(int flag)
 {
-	S390_lowcore.cpu_flags &= ~(1UL << flag);
+	get_lowcore()->cpu_flags &= ~(1UL << flag);
 }
 
 static __always_inline bool test_cpu_flag(int flag)
 {
-	return S390_lowcore.cpu_flags & (1UL << flag);
+	return get_lowcore()->cpu_flags & (1UL << flag);
 }
 
 static __always_inline bool test_and_set_cpu_flag(int flag)
@@ -269,7 +269,7 @@ static __always_inline unsigned long __current_stack_pointer(void)
 
 static __always_inline bool on_thread_stack(void)
 {
-	unsigned long ksp = S390_lowcore.kernel_stack;
+	unsigned long ksp = get_lowcore()->kernel_stack;
 
 	return !((ksp ^ current_stack_pointer) & ~(THREAD_SIZE - 1));
 }
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index 5742d23bba13..da3dad18fe50 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -84,6 +84,7 @@ struct sclp_info {
 	unsigned char has_ibs : 1;
 	unsigned char has_skey : 1;
 	unsigned char has_kss : 1;
+	unsigned char has_diag204_bif : 1;
 	unsigned char has_gisaf : 1;
 	unsigned char has_diag318 : 1;
 	unsigned char has_diag320 : 1;
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 32f70873e2b7..8505737712ee 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -77,24 +77,24 @@ extern unsigned long max_mappable;
 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
 extern unsigned long mio_wb_bit_mask;
 
-#define MACHINE_IS_VM		(S390_lowcore.machine_flags & MACHINE_FLAG_VM)
-#define MACHINE_IS_KVM		(S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
-#define MACHINE_IS_LPAR		(S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
-
-#define MACHINE_HAS_DIAG9C	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
-#define MACHINE_HAS_ESOP	(S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
-#define MACHINE_HAS_IDTE	(S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
-#define MACHINE_HAS_EDAT1	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
-#define MACHINE_HAS_EDAT2	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
-#define MACHINE_HAS_TOPOLOGY	(S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
-#define MACHINE_HAS_TE		(S390_lowcore.machine_flags & MACHINE_FLAG_TE)
-#define MACHINE_HAS_TLB_LC	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
-#define MACHINE_HAS_TLB_GUEST	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
-#define MACHINE_HAS_NX		(S390_lowcore.machine_flags & MACHINE_FLAG_NX)
-#define MACHINE_HAS_GS		(S390_lowcore.machine_flags & MACHINE_FLAG_GS)
-#define MACHINE_HAS_SCC		(S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
-#define MACHINE_HAS_PCI_MIO	(S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO)
-#define MACHINE_HAS_RDP		(S390_lowcore.machine_flags & MACHINE_FLAG_RDP)
+#define MACHINE_IS_VM		(get_lowcore()->machine_flags & MACHINE_FLAG_VM)
+#define MACHINE_IS_KVM		(get_lowcore()->machine_flags & MACHINE_FLAG_KVM)
+#define MACHINE_IS_LPAR		(get_lowcore()->machine_flags & MACHINE_FLAG_LPAR)
+
+#define MACHINE_HAS_DIAG9C	(get_lowcore()->machine_flags & MACHINE_FLAG_DIAG9C)
+#define MACHINE_HAS_ESOP	(get_lowcore()->machine_flags & MACHINE_FLAG_ESOP)
+#define MACHINE_HAS_IDTE	(get_lowcore()->machine_flags & MACHINE_FLAG_IDTE)
+#define MACHINE_HAS_EDAT1	(get_lowcore()->machine_flags & MACHINE_FLAG_EDAT1)
+#define MACHINE_HAS_EDAT2	(get_lowcore()->machine_flags & MACHINE_FLAG_EDAT2)
+#define MACHINE_HAS_TOPOLOGY	(get_lowcore()->machine_flags & MACHINE_FLAG_TOPOLOGY)
+#define MACHINE_HAS_TE		(get_lowcore()->machine_flags & MACHINE_FLAG_TE)
+#define MACHINE_HAS_TLB_LC	(get_lowcore()->machine_flags & MACHINE_FLAG_TLB_LC)
+#define MACHINE_HAS_TLB_GUEST	(get_lowcore()->machine_flags & MACHINE_FLAG_TLB_GUEST)
+#define MACHINE_HAS_NX		(get_lowcore()->machine_flags & MACHINE_FLAG_NX)
+#define MACHINE_HAS_GS		(get_lowcore()->machine_flags & MACHINE_FLAG_GS)
+#define MACHINE_HAS_SCC		(get_lowcore()->machine_flags & MACHINE_FLAG_SCC)
+#define MACHINE_HAS_PCI_MIO	(get_lowcore()->machine_flags & MACHINE_FLAG_PCI_MIO)
+#define MACHINE_HAS_RDP		(get_lowcore()->machine_flags & MACHINE_FLAG_RDP)
 
 /*
  * Console mode. Override with conmode=
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index 6e5b1b4b19a9..c13c79025348 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -11,7 +11,7 @@
 #include <asm/lowcore.h>
 #include <asm/processor.h>
 
-#define raw_smp_processor_id()	(S390_lowcore.cpu_nr)
+#define raw_smp_processor_id()	(get_lowcore()->cpu_nr)
 
 extern struct mutex smp_cpu_state_mutex;
 extern unsigned int smp_cpu_mt_shift;
@@ -59,7 +59,7 @@ static inline void smp_cpus_done(unsigned int max_cpus)
 {
 }
 
-extern int smp_rescan_cpus(void);
+extern int smp_rescan_cpus(bool early);
 extern void __noreturn cpu_die(void);
 extern void __cpu_die(unsigned int cpu);
 extern int __cpu_disable(void);
diff --git a/arch/s390/include/asm/softirq_stack.h b/arch/s390/include/asm/softirq_stack.h
index 1ac5115d3115..42d61296bbad 100644
--- a/arch/s390/include/asm/softirq_stack.h
+++ b/arch/s390/include/asm/softirq_stack.h
@@ -8,7 +8,7 @@
 #ifdef CONFIG_SOFTIRQ_ON_OWN_STACK
 static inline void do_softirq_own_stack(void)
 {
-	call_on_stack(0, S390_lowcore.async_stack, void, __do_softirq);
+	call_on_stack(0, get_lowcore()->async_stack, void, __do_softirq);
 }
 #endif
 #endif /* __ASM_S390_SOFTIRQ_STACK_H */
diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h
index 37127cd7749e..3e43c90ff135 100644
--- a/arch/s390/include/asm/spinlock.h
+++ b/arch/s390/include/asm/spinlock.h
@@ -16,7 +16,7 @@
 #include <asm/processor.h>
 #include <asm/alternative.h>
 
-#define SPINLOCK_LOCKVAL (S390_lowcore.spinlock_lockval)
+#define SPINLOCK_LOCKVAL (get_lowcore()->spinlock_lockval)
 
 extern int spin_retry;
 
diff --git a/arch/s390/include/asm/stacktrace.h b/arch/s390/include/asm/stacktrace.h
index 85b6738b826a..1d5ca13dc90f 100644
--- a/arch/s390/include/asm/stacktrace.h
+++ b/arch/s390/include/asm/stacktrace.h
@@ -65,6 +65,7 @@ struct stack_frame {
 			unsigned long sie_reason;
 			unsigned long sie_flags;
 			unsigned long sie_control_block_phys;
+			unsigned long sie_guest_asce;
 		};
 	};
 	unsigned long gprs[10];
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 4d646659a5f5..640901f2fbc3 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -161,16 +161,16 @@ static inline unsigned long local_tick_disable(void)
 {
 	unsigned long old;
 
-	old = S390_lowcore.clock_comparator;
-	S390_lowcore.clock_comparator = clock_comparator_max;
-	set_clock_comparator(S390_lowcore.clock_comparator);
+	old = get_lowcore()->clock_comparator;
+	get_lowcore()->clock_comparator = clock_comparator_max;
+	set_clock_comparator(get_lowcore()->clock_comparator);
 	return old;
 }
 
 static inline void local_tick_enable(unsigned long comp)
 {
-	S390_lowcore.clock_comparator = comp;
-	set_clock_comparator(S390_lowcore.clock_comparator);
+	get_lowcore()->clock_comparator = comp;
+	set_clock_comparator(get_lowcore()->clock_comparator);
 }
 
 #define CLOCK_TICK_RATE		1193180 /* Underlying HZ */
diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h
index 0e7bd3873907..0679445cac0b 100644
--- a/arch/s390/include/asm/uv.h
+++ b/arch/s390/include/asm/uv.h
@@ -483,9 +483,9 @@ static inline int is_prot_virt_host(void)
 int uv_pin_shared(unsigned long paddr);
 int gmap_make_secure(struct gmap *gmap, unsigned long gaddr, void *uvcb);
 int gmap_destroy_page(struct gmap *gmap, unsigned long gaddr);
-int uv_destroy_owned_page(unsigned long paddr);
-int uv_convert_from_secure(unsigned long paddr);
-int uv_convert_owned_from_secure(unsigned long paddr);
+int uv_destroy_folio(struct folio *folio);
+int uv_destroy_pte(pte_t pte);
+int uv_convert_from_secure_pte(pte_t pte);
 int gmap_convert_to_secure(struct gmap *gmap, unsigned long gaddr);
 
 void setup_uv(void);
@@ -498,17 +498,17 @@ static inline int uv_pin_shared(unsigned long paddr)
 	return 0;
 }
 
-static inline int uv_destroy_owned_page(unsigned long paddr)
+static inline int uv_destroy_folio(struct folio *folio)
 {
 	return 0;
 }
 
-static inline int uv_convert_from_secure(unsigned long paddr)
+static inline int uv_destroy_pte(pte_t pte)
 {
 	return 0;
 }
 
-static inline int uv_convert_owned_from_secure(unsigned long paddr)
+static inline int uv_convert_from_secure_pte(pte_t pte)
 {
 	return 0;
 }
diff --git a/arch/s390/include/asm/vtime.h b/arch/s390/include/asm/vtime.h
index 561c91c1a87c..9d25fb35a042 100644
--- a/arch/s390/include/asm/vtime.h
+++ b/arch/s390/include/asm/vtime.h
@@ -4,16 +4,20 @@
 
 static inline void update_timer_sys(void)
 {
-	S390_lowcore.system_timer += S390_lowcore.last_update_timer - S390_lowcore.exit_timer;
-	S390_lowcore.user_timer += S390_lowcore.exit_timer - S390_lowcore.sys_enter_timer;
-	S390_lowcore.last_update_timer = S390_lowcore.sys_enter_timer;
+	struct lowcore *lc = get_lowcore();
+
+	lc->system_timer += lc->last_update_timer - lc->exit_timer;
+	lc->user_timer += lc->exit_timer - lc->sys_enter_timer;
+	lc->last_update_timer = lc->sys_enter_timer;
 }
 
 static inline void update_timer_mcck(void)
 {
-	S390_lowcore.system_timer += S390_lowcore.last_update_timer - S390_lowcore.exit_timer;
-	S390_lowcore.user_timer += S390_lowcore.exit_timer - S390_lowcore.mcck_enter_timer;
-	S390_lowcore.last_update_timer = S390_lowcore.mcck_enter_timer;
+	struct lowcore *lc = get_lowcore();
+
+	lc->system_timer += lc->last_update_timer - lc->exit_timer;
+	lc->user_timer += lc->exit_timer - lc->mcck_enter_timer;
+	lc->last_update_timer = lc->mcck_enter_timer;
 }
 
 #endif /* _S390_VTIME_H */